Tag: substances, objects and energy

Questions Related to substances, objects and energy

The fuels that cannot be replenished, once they are used are called _______ .

  1. renewable sources

  2. non-renewable sources

  3. ultimate sources

  4. accessible sources


Correct Option: B

A good fuel should :

  1. be safe to store and transport

  2. be able to provide desired quantity of energy at a steady rate over a long period of time

  3. have low content of non-combustibles and no combustion products that are poisonous or environmental pollutants

  4. all the above


Correct Option: D

What is the term known as 'when there is a great need of energy and we do not have enough amount of the same'?

  1. Energy crisis

  2. Energy loss

  3. Energy gain

  4. None


Correct Option: A
Explanation:

A situation where the demand for the energy exceeds its availability or the supply resulting in a bottleneck effect, an increase in prices etc., is known as the energy crisis.

State whether the given statement is True or False :

Energy which is used up cannot be reversed to its original state.

  1. True

  2. False


Correct Option: A
Explanation:

Energy can neither be created nor be destroyed. It can only be transformed form one form to the another. Energy once used up cannot be reversed to its original form.

From below what is an example of conventional source of energy?

  1. Sun

  2. Wave

  3. Fossil fuels

  4. All of the above


Correct Option: C
Explanation:

Examples of conventional sources : wood, coal, fossil fuels.

Examples of non-conventional sources: wind, thermal, solar, tidal.

Hotspots are source of  _________ energy.

  1. wind

  2. geothermal

  3. nuclear

  4. hydroelectric


Correct Option: B
Explanation:

Hotspots are the volcanic regions near the mantle of Earth.It is the sources of geothermal energy also called natural thermal geysers used to harness electricity.

The main component of natural gas is?

  1. Carbon dioxide

  2. Carbon monoxide

  3. Oxygen

  4. Methane


Correct Option: D
Explanation:

Natural gas is a naturally occurring, flammable gas comprising largely of methane and other hydrocarbons. It is a source of fuel and formed underground.